Steam Q1a Operation Manual Rev 4.1.2 16/24 24 August 2006
• Pressing F6 results in Doppler shift for a moving locomotive but activates Start Up in Neutral.
• Pressing F9 turns on/off the Heavy Load feature in a moving locomotive but activates Shut Down in Neutral.
Note: The Whistle, Bell, Doppler Shift, Squealing Brake and Neutral sounds are described in detail on pages 19-20, in the
Quantum System Sounds
section of this manual.